TY - JOUR A2 - Labow, Rosalind AU - Jung, Yeon Suk AU - Kato, Reiko AU - Tsuchiya, Toshie PY - 2011 DA - 2011/08/02 TI - Biodegradable Polymers Induce CD54 on THP-1 Cells in Skin Sensitization Test SP - 424571 VL - 2011 AB - Currently, nonanimal methods of skin sensitization testing for various chemicals, biodegradable polymers, and biomaterials are being developed in the hope of eliminating the use of animals. The human cell line activation test (h-CLAT) is a skin sensitization assessment that mimics the functions of dendritic cells (DCs). DCs are specialized antigen-presenting cells, and they interact with T cells and B cells to initiate immune responses. Phenotypic changes in DCs, such as the production of CD86 and CD54 and internalization of MHC class II molecules, have become focal points of the skin sensitization test. In this study, we used h-CLAT to assess the effects of biodegradable polymers. The results showed that several biodegradable polymers increased the expression of CD54, and the relative skin sensitizing abilities of biodegradable polymers were PLLG (75 : 25) < PLLC (40 : 60) < PLGA (50 : 50) < PCG (50 : 50). These results may contribute to the creation of new guidelines for the use of biodegradable polymers in scaffolds or allergenic hazards. SN - 1687-8787 UR - https://doi.org/10.1155/2011/424571 DO - 10.1155/2011/424571 JF - International Journal of Biomaterials PB - Hindawi Publishing Corporation KW - ER -